ML20076F521
| ML20076F521 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/15/1983 |
| From: | Coffey J TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8308260068 | |
| Download: ML20076F521 (2) | |
Text
_.
152 830815 861 l!S N R C P F.. ' ' r1.I TELECOPY 'f0 NRc:0RGIA Aug. 15, 1983 U. S. Nuclear Regulatory Commissitn'UC 23 A 9 : 4 6 nA Region II 101 Marietta Street, NW Suite 3100 Atlanta, Georgia 30303 BFRO-50-259/83049R1 Reported under Technical Specification 6.7 2.A.(3)
Telecooy Date 8/15/83 Time 0800 Date of Occurrence: 8/12/83 Time of occurrence:
1400 Unit 1 Technical Specification Involved:
3.6.G Conditions Prior to Occurrence Unit 1 in refueling outage Unit 2 at 3139 MWt Unit 3 at 3081 MWt Identification and Descriotion of Occurrence. (Correction to original)
Weld DCS-1-7 (core spray) has an intermittent indication on the pipe side of the weld that is 360-degrees in length and approximately 41-percent through wall depth.
This is a 12-inch, 304 stainless steel, schedule 80 pipe. The cracking is between the manual isolation valve and the testable check valve (inboard contairment isolation valve).
Weld DSRWC-1-3 (Reactor Water Cleanup) has two indicators that are approximately 5" long between 11:30 and 2:30 and 1-1/2" long between 8:30 and 9:30 with a through wall depth of greater than 805 This is a 6-inch, j
304 stainless steel, schedule 80 pipe. The cracking is between the inboard and outboard containment isolation valves.
Uodate Item l
l To date the attached are our inspection results:
f N-h A. Co ey.
Acting Power Plant Superintendent Browns Ferry Nuclear Plant f
r~ihdc # C "'
0 8308260068 830815 r
- a ATTACHMENT - BFRO 50-259/81049R1 i
I Total Inspection Inspection Inspection Welds with Under Reauired Comolete Satisfactory Cracks Evaluatior.
Core Spray 27 18 12 1
5
^
WW 5
2 0
1 1
RHR (Head Spray) 21 15 15 0
0 SATISFACTORY Core Spray DCS 1-6, 9, 14, 15,18 DSCS 1-4, 5, 6, 8, 9, 10, 11, 12, 13 4
i RHR (Head Spray)
DHS 1-2, 3 DSHS 1-1A, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 i
UNDER EVALUATION Core Spray DCS 1-8, 16 17 DSCS 1-4, 5 I
RWCU DSRWC 1-2 l
RHR (Head Spray)
None This is an update of the event reported previously on 8/11/83 t
I 4